CN212571454U

CN212571454U - USB plug

Info

Publication number: CN212571454U
Application number: CN202020668475.9U
Authority: CN
Inventors: 张少灿
Original assignee: Shenzhen Everwin Precision Technology Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2021-02-19
Anticipated expiration: 2030-04-27

Abstract

A USB plug comprises an insulating body, a plurality of conductive terminals and a locking piece which are inserted into the insulating body, and a metal shell which is sleeved outside the insulating body, wherein the insulating body comprises a plug-in cavity, an assembly cavity, an isolation part, a plurality of terminal grooves, the plug-in cavity and the assembly cavity are respectively arranged at the front end and the rear end of the insulating body, the isolation part is positioned between the plug-in cavity and the assembly cavity, the isolation part penetrates through the front part and the rear part of the insulating body, the isolation part is communicated with the plug-in cavity and the assembly cavity, each conductive terminal comprises a fixing part, a contact arm and a clamping arm, the fixing part extends forwards to the plug-in cavity, the clamping arm extends backwards to form the contact arm, and convex ribs which are in interference fit with the inner wall surface. The USB plug can not seep glue.

Description

USB plug

Technical Field

The present application relates to the field of electrical connectors, and more particularly, to a USB plug.

Background

The existing Type C USB plug generally adopts a plug-in mounting Type structure, and comprises an insulating body, a conductive terminal inserted in the insulating body, a metal shell sleeved outside the insulating body, a printed circuit board connected to the rear end of the conductive terminal and waterproof glue coated on the tail part of the conductive terminal. The insulation body comprises an inserting cavity and a terminal groove, wherein the inserting cavity is located at the front end of the insulation body, and the terminal groove penetrates through the insulation body backwards from the inserting cavity. The conductive terminal is inserted into the terminal groove from back to front, a gap exists between the conductive terminal and the terminal groove, when waterproof glue is smeared, the waterproof glue has the risk that the gap between the terminal groove and the conductive terminal enters the splicing cavity, and further the waterproof glue is bonded on the contact part of the conductive terminal, so that the conductive terminal is blocked or cannot be bounced when being plugged, and the function failure is caused.

SUMMERY OF THE UTILITY MODEL

Therefore, there is a need for a USB plug that can effectively prevent the waterproof adhesive from contaminating the contact portion of the conductive terminal.

In order to solve the technical problem, the application provides a USB plug, including insulator, cartridge in a plurality of conductive terminals in the insulator are located with latch fitting and cover the external metal casing of insulator, insulator is including seting up grafting chamber, assembly chamber, being located at both ends around respectively grafting chamber and assembly chamber between the isolation part run through around and around the isolation part communicates grafting chamber and assembly chamber's a plurality of terminal grooves, conductive terminal including the centre gripping in terminal inslot fixing part, certainly fixing part is preceding to extending to grafting intracavity's contact arm and certainly fixing part is the centre gripping arm that the back extension formed, the left and right sides of fixing part be formed with respectively with the internal face in terminal groove produces interference fit's protruding muscle.

Preferably, the ribs on the left and right sides of the holding part are formed by punching, and a punched groove is formed on the back of the rib.

Preferably, the left and right sides of the holding part have the same number of ribs.

Preferably, the holding portion of each conductive terminal extends backwards to form a pair of clamping arms, and the clamping arms are clamped and electrically connected with the printed circuit board.

Preferably, the insulating body rear end coating has waterproof glue, protruding muscle with terminal groove interference fit makes waterproof glue can not ooze the terminal groove gets into in the grafting intracavity.

Preferably, a blocking part is connected between the transverse inner walls of the terminal grooves on one side close to the plugging cavity, and the front end of the holding part of the conductive terminal abuts against the rear part of the blocking part.

Preferably, the USB plug further includes a locking piece, the locking piece includes a pair of locking arms located at the left and right sides, a pair of beams connected to the locking arms and an insulator formed on the beams, and the welding legs are formed by extending the locking arms backward.

Preferably, the left side and the right side of the insulating body are further provided with side grooves for communicating the assembling cavity with the inserting cavity, the locking arm is accommodated in the side grooves, the front free end of the locking arm enters the inserting cavity, and the cross beam and the insulator on the cross beam are clamped between the clamping arms and forwardly abut against the fixing part.

The left side and the right side of the fixing part of the conductive terminal are respectively provided with the convex ribs, so that the convex ribs and the terminal grooves are in interference fit to prevent waterproof glue from permeating forwards into the inserting cavity or the contact arm, and the elastic failure of the contact arm is avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.

FIG. 1 is a perspective view of a USB plug of the present application;

FIG. 2 is an exploded perspective view of a USB plug according to the present application;

FIG. 3 is a perspective view of the insulator of the USB plug of the present application;

FIG. 4 is a cross-sectional view taken along the line C-C shown in FIG. 3;

FIG. 5 is a perspective view of a conductive terminal of the USB plug of the present application;

FIG. 6 is a top view and a partially enlarged view of a conductive terminal of the USB plug of the present application;

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 8 is a sectional view taken along the line B-B of fig. 1 and a partially enlarged view thereof.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings.

The direction of the present application defines the right direction (or lateral direction) with the X direction shown in fig. 1 as the left-right direction, the rear direction (or longitudinal direction) with the Y direction as the front-rear direction, and the Z direction as the up-down direction.

Referring to fig. 1 and 2, the USB plug of the present application includes an insulating body 20, a conductive terminal 30 and a locking member 40 inserted into the insulating body 20, a printed circuit board 50 connected to a rear end of the conductive terminal 30, a metal shell 10 sleeved outside the insulating body 20, and a waterproof adhesive 50 coated on a rear end of the insulating body 20.

The metal case 10 includes a cylindrical body 11 and a central hole 12 penetrating the cylindrical body 11 in a front-rear direction.

As shown in fig. 3 to fig. 4, the insulation body 20 includes an insertion cavity 23 and an assembly cavity 22 respectively formed at front and rear ends, a separation portion 24 located between the insertion cavity 23 and the assembly cavity 22, and a terminal slot 25 passing through the separation portion 24 in front and rear directions and communicating the insertion cavity 23 and the assembly cavity 22. The terminal groove 25 is formed with a blocking portion 26 in the middle of one side near the plugging cavity 23, and the terminal groove 25 is divided into two parts at the upper and lower sides at the position of the blocking portion 26.

The lateral two sides of the insulating body 20 are further provided with side grooves 27, and the side grooves 27 extend from the assembling cavity 22 to the lateral outer side of the plugging cavity 23 and are communicated with the plugging cavity 23 inwards.

As shown in fig. 2 to 8, the conductive terminal 30 includes a holding portion 31 inserted into the terminal slot 25, at least one contact arm 33 extending from a front end of the holding portion 31, and a pair of clamping arms 32 extending from a rear end of the holding portion 31. The contact arms 33 of some of the conductive terminals 30 include a pair of upper and lower portions, and the holding portion 31 is formed with protruding

ribs

311, 312 protruding from both left and right sides in a transverse direction by stamping. A stamped groove is formed on the opposite side of the

ribs

311, 312. At least one rib is formed on one side surface of the holding portion 31, and a plurality of

ribs

311, 312 may be provided.

The latch fitting 40 is including extending in a pair of locking arm 41 in the side slot 27, the preceding free end of locking arm 41 extends into in the grafting chamber 23, and is a pair of locking arm 41 rear end backward extension is formed with soldering lug 42, and is a pair of locking arm 41 connects as an organic wholely through a crossbeam 43 in the centre, injection moulding has insulator 44 on the crossbeam 43.

During assembly, the conductive terminal 30 is inserted into the terminal slot 25 from the back to the front, the contact arm 33 enters the insertion cavity 23, the clamping arm 32 is located in the assembly cavity 22, and the holding part 31 is located in the terminal slot 25; the locking assembly 40 is then inserted forward between the clamping arms 32, wherein the beam 43 and the insulator 44 thereon are positioned between the clamping arms 32 to hold the conductive terminal 30 forward so that the conductive terminal 30 does not withdraw rearward. The free end of the locking arm 41 enters the plug cavity 23. The

convex ribs

311, 312 on the left and right sides of the holding part 31 are in interference fit with the inner wall surface of the terminal groove 25; then the metal shell 10 is sleeved outside the insulating body 20 from front to back; subsequently, the printed circuit board 60 is inserted between the clamping arms 32, and finally, the waterproof glue 50 is coated on the tail portion of the insulating body 20, and the waterproof glue 50 is blocked from penetrating into the contact arm 33 portion due to the interference fit between the

convex ribs

311, 312 on the left and right sides of the holding portion 31 and the terminal groove 25.

The left side and the right side of the holding part 31 of the conductive terminal 30 are respectively provided with the

convex ribs

311 and 312, so that the

convex ribs

311 and 312 and the terminal groove 25 are in interference fit to prevent the waterproof glue 50 from seeping forwards into the plug-in cavity 23 or the contact arm 33, and the elastic failure of the contact arm 33 is avoided.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A USB plug comprises an insulating body, a plurality of conductive terminals and locking pieces which are inserted into the insulating body, and a metal shell which is sleeved outside the insulating body, wherein the insulating body comprises an inserting cavity, an assembling cavity, an isolating part, a plurality of terminal grooves, the inserting cavity and the assembling cavity are respectively arranged at the front end and the rear end of the insulating body, the isolating part is positioned between the inserting cavity and the assembling cavity, the isolating part penetrates through the isolating part from front to back and is communicated with the inserting cavity and the assembling cavity, the conductive terminals comprise fixing parts which are clamped in the terminal grooves, contact arms which extend forwards into the inserting cavity from the fixing parts and clamping arms which extend backwards from the fixing parts, and the USB plug is characterized in that convex ribs which are in interference fit with the inner wall surfaces of the terminal grooves are respectively formed at the left side and the right side.

2. The USB plug according to claim 1, wherein the ribs on the left and right sides of the holding portion are formed by punching, and a punched groove is formed on the back of the rib.

3. The USB plug according to claim 2, wherein the left and right sides of the holding portion have the same number of ribs.

4. The USB plug of claim 3, wherein the holding portion of each conductive terminal extends rearward to form a pair of clamping arms, and the clamping arms clamp and electrically connect to a printed circuit board.

5. The USB plug of claim 4, wherein the rear end of the insulating body is coated with a waterproof glue, and the rib is in interference fit with the terminal groove so that the waterproof glue cannot seep through the terminal groove into the plug cavity.

6. The USB plug of claim 5, wherein a blocking portion is connected between the lateral inner walls of the terminal slot on the side close to the plugging cavity, and the front end of the holding portion of the conductive terminal abuts against the rear of the blocking portion.

7. The USB plug of claim 6, wherein the USB plug further comprises a locking member, the locking member comprising a pair of locking arms on left and right sides, a solder tail extending rearward from the locking arms, a beam connecting the pair of locking arms, and an insulator formed on the beam.

8. The USB plug of claim 7, wherein the left and right sides of the insulating housing further have side slots for connecting the assembling cavity and the inserting cavity, the locking arm is received in the side slots, a front free end of the locking arm enters the inserting cavity, and the cross beam and the insulator thereon are clamped between the clamping arms and forwardly abut against the holding portion.